Apparatus for producing cement.



. N9. 833,918, PATENTED OCT. 23, 1906.

R. G. OARPBNTER APPARATUS. FOR PRODUCING CEMENT; Arrnonxon nun 001.17,1902.

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PATENTED OCT; 23, 906. R. c. CARPENTER. APPARATUS FOR rnonncnm CEMENT.

a No- 833,918.

APPLIOATIOI FILED 0015.17, 1902 s sums-sum 2.

- I LED 61110 I No. 833,918.: I v PATENTBD 00123, 1906.

. R. c. CARPENTER. APPARATUS onraonucme CEMENT.

APPLIOAIIOI FILED 0O1'.17, 1902. i

a auxin-sum a.

To all whom it may concern:

ROLLA o. CARPENTER, or iruAoA, NEW YORK.

APPARATUS FOR PRODUCING CEMENT Specification of Letters Patent.

Application filed O e 17', 1902; Serial No- 127348- 'Be it known that'I,RoLLA O. CARPENTER,

a citizen of the United States, and a resident of Ithaca, in the countyof Tom kins, State of NewYork, have invented an discoveredcertain newand useful Improvements in A aratus for Producing Cement, of which theollowin is a specificatiomtake'n in connec tion wit the accompanyingdrawings, an-- nexed to and forming part of the same.

This invention relates to apparatus for producing'cement, and; itespecially relates to apparatus for producingit by the rotary process. pIn the accompanying drawings, in which the same reference characters reparts in the various figures, Figure 1 is an same.

elevation, partly in section, of apparatus em- .bodying my invention.Fig. 2 is a plan view of the same, parts being shown in section; I Fig.,3 is a vertical sectional view of the boiler and mountings formln',

Figs. 4, 5, 6, an 7 show etails.

The embodiment of this invention shown in the drawings comprises the tworotary er to similar part of the kilns A of ordinary constructionandmount- 1 ed in the usual Way at a slight incline, so as to be rotatedby the ordinary driving means, (indicated at A,.) These kilns areclosely engaged by the chambers B about the mouths of the same, as shownin Fig. 1 so that a substantially tight joint is made at this 'oint,'

while at the same time the kilns are al owed to rotate freely. The kilnsare heated. in any desired way, preferably by jets of powdered fuel,oil, or as issuing from the burner-tubes B The c ute B is connected withthe lower portion of each one of the chambers B, and this chute, asindicated in Fig. 7, may be lined. with suitable refractory material BThe cement clinker which is discharged from the mouthmfthe kiln isguided down this chute and falls into theclihker-pit at the lower end ofthe conveyer-case B The 'conveyer B as it is indicated in the-drawings,is composed of an endless chain with buckets formed in the usual way,and this chain is mounted upon'the 'spro'cket wheels B B at either endof the conveyer-case. This conveyer is operated by rotating one of thesprocket-whee sB, at any desired rate, and this sprocket-wheel isarranged so that the material carried up by the conveyer is deliveredinto the upper end of the tower 0,, which, as indicatedin Fi .1, isconnected to the upper endof the cli er-coolcr O. This Patented Oct. 23,1906.

' tower C, is formed with a number of incli'ned slides C projecting fromeither side of the same so as to form a staggered passage. The

cement clinker delivered into the top of this staggered tower falls fromone of these slides to another, so that it comes intocoritact with theair in the tower to a very considerable extent during its fall, 'andthusimparts its heat to this air and to the slides over which it asses. Theair to su port the combustion o the fuel within the kilh is preferablyforced by a fan or other means throu h the air-pipe C and passes intothe top 0 the cooler adjacent the tower.- This air, which moves in areverse direction to the cement clinker, passes through the tower, theconveyor-case, and chutes and absorbs heated condition.

The clinker accumulates in the cooler C, which rests upon suitable piersC and is removed from time to time by opening the discharge-slide D.(Indicated in Figs. 5 and 6.) This-slide is preferably mounted insuitable heat, so that it enters the kiln in a highlyguideways in thebottom of the. cooler and is reciprocated by the gear D which ,enga es arack D on the central portion of the sli e. This gear is operated by thehandle D and by this-means the slide D may be moved to discharge theclinker at either end of the cooler, so that the cement fallsintoreceptacles inthe passage D under the cooler. If

desired, however, any other meanspf re moving the clinker from thecooler may be used. The cleaning-door C is formed in the side of thecooler, but is kept closed durin the normal operation of the apparatus'number of op'enin s 0 may be formed adjacent each of the s ides C andserve to clean these slides when desired, and similar openings C areformed near the lower portion of the tower to admit additional air'ifnecess These 0 enin s can be closed b suitable doors w en esired.Instead o the par' ticular construction of clinker-cooler and conveyingmeans which has been'disclosed other forms of clinker-cooler may'beused,

although it is desirable in all cases that theseclinker-coolers shall beso constructed-that the air for combustion shall be heated before itenters the kilns.

erabl (connected with hoods or sett ing cham ers in which a considerableportion of the suspended solid matter or dust in.the' kiln-gases isdeposited, so that this material does not interfere with the operationof the apparatus through which these gases subse quently pass an fromwhich 1t may be removed from time to timeas desired. Each of the hoods Kis formed with an extens on K,., which makes a substantially tight o ntwith the upper end of the kiln in any des red way, while allowing therotation'of the kiln. The boiler-flue K communicates with the uppersrtion of the hood, and the boiler-dam per ,operates in this passage to.adjlust the extentof the opening or to entirely c ose the same, ifdesired. he economizer-flue K, communicates with the lower portion ofthe hood and connects with the economizerhousing, opening at the point EThis economizer-flue'is controlled by a similar econornizer-damper K Thehood is rovided with the usual conduit K by-whic cement material is fedinto the u per end of the kiln. The boiler G, throng which the gasesfrom the kiln may gass, if desired, is mounted in a suitable X oilersettin G,. This boiler is preferably an upri ht tu ular boiler formedwith widely-s ed vertical watertubes (3,, so as to rea ily allow forcleanin the same. The divisionplate G, is arrange across the boiler tocause the gases to pass through the tubes in the proper manner, the

. as indicated in Fig. 1, and suitable gases passing up over the top ofthis .diyisiom plate. The boiler'is formed, as indicated, with the waterdrum G and with the steamdrum G :at the top of the boiler. It will,

however, be understood that it is not necessary inall .cases touse theparticular description of boiler which has been illustrated anddescribed, since other forms of water-tube boiler could be used, andindeed under some circumstances fire-tube boilers might be emloyed. Theboiler setting is preferably ibrmed with several cleaning-doors G in thefront face, and the furnace H is mpunted to cooperate with the boiler inthe usual way.

This furnace comprises the grate H,, the ashpit H of ordinaryconstruction, being formed H being provided in the front of the furnace.A series of blast holes H are indicated, through which forced draft maybe supplied to the ash-pit, if desired. This auxiliary furnace may beused insupplying additional heat to the boiler or if for any reason itis desirable to operate the boiler when the kilns are not regularly oerated. In sucha case the hot gases from t e combustion of suitable.fuel on the grate H pass through the throat H, of the furnace and heatthe boiler in a well-known manner. .Since the boiler-flue through whichthe kiln-gases enter the .boiler is located beyond the bridge wall H theburning of fuel in the inclosed combustionchamber of the auxiliaryfurnace is not interferedwith in any way by the presence of the spentgases from the kiln.

' Another heat-utilizing device may :be emoors H ployed, if desired, toabsorb the heat from the kiln-gases and to utilize the same, preferablyfor the production of heated water or steam. This heat utilizing device,which may be used in connection with the boiler or otherwise, preferablyconsists of the feedwater heateror economizer indicated in the drawings.The economizer E is shown mounted .in a suitable housing E and thiseconomizer is formed in the ordinary way of vertical tubes, these tubesbeing widely spaced for facility of cleanin Below the series of tubes isa soot cham er E,, which may be cleaned from time to time throughsuitable opemngs formed in the housing. The hot gases from the boilermay enter the economizer-housing through the passages E and when theeconomizer is operatin normally pass between the economizer-tn es toheat the water circulating therein and then are drawn into the fan F andare discharged from the stack F,. It will be noted that the by? ass E,is formed under the soot-chamber, and this by-pass iscontrolled by thetwo pivo-ted dampers E E which in the position indicated in Fig. 1 closethis by-pass. It will be evident, however, that when these dampars areboth swung into horizontal position the by-pass is open andthe passagethrough the economizer-tubes is closed. This allows the gases to passdirectly from the passage E into-the fan and stack.

ltwill be seen, therefore, that the gases issuing from the kiln passinto the hood K. Then under normal conditions when it is desired thatthese gases pass through the boiler and economizer before reaching thestack the boiler-damper K is opened, so as to allow these gases to passthrough the boiler-flue K,, then through the boiler, heating the tubes,as has been described, and then these gases pass throrgh the economizer,the fan being operated to the extent required to produce the desired.circulation of gases through the apparatus. If desired, thiscirculation may be aided by supplying the air to the pipe C underpressure. A large part of the heat in the kilngases is utilized beforethey are dis charged into the stack, and a very great saving results bythis apparatts. If it is desired to operate the boiler by the kiln-gaseswithout utilizing the economizer, the by-pass dampers E E, are operated,as has been described, and the ln'ln-gases then enter the bypass and godirectly into the stack. It is possible, however, .to allow thekiln-gases to pass through the economizer without passing through theboiler, and in order to accomplish this thezdamper K in the hood isclosed to close the'boiler-flue 1%,. The economizerdamper K is opened,and the kiln-gases thereupon enter the economizer housing through theopening E The kiln-gases 4 stack. It will be un' erstoodalso that blated'as desired. The-auxiliary i when desired through the blast-holespartially openingthe byass dampers E part of the gases ma allowed topass through .the onommer-tubes and part through the byass, so that theamount of heat utilized in t eeconomizer ma be regu- Lrnace. H may beused under any conditions to heat the boiler either when the kiln-gasesare not used for this purpose or in conjunction with the kilnases, andsuitable blast is St lied althou h under most conditions the exhdiistfaneffects the roper circulation of air through this part Oi the apparatus.It will of course be understood by those familiar with this art thatmany'modifications may be made from the exact form of apparatus whichhas been disclosed. It is.

not necessary in all cases to employ all of the elements which have beendescribed, and, furthermore, parts of this apparatus may be used inconnection with other elements without departing from the spirit. of'this invention. I do not, therefore, wish to be limited by thedisclosure which'I have made in this case; but 7 What I claim as new;and What I desire to secure by Letters Patent, is set forth in theannexed claims: 1. In cement apparatr s, rotary kilns,

chambers inclosing the mouths of said kilns,

with a by-pass and by-pass dampers, boilermeans to heat said kilns, acooler mounted adjacent said kilns',.hoods connected with the upper endsof saidkilns, an upright wa-' ter-tube boiler having widely-spacedvertical tubes mounted adjacent said hoods, an auxiliary furnace forsaid boiler, an economizer mounted adjacent said boiler and providedfines and economizer-flu'es rovided with 1 dampers connected with saidoiler and said -.economizer and an exhaust-fan and stack connected withsaid economizer.

2. In cement'apparatus, a cement-kiln, a clinker-chute to receiveclinker from said kiln, a -clinker'- cooler adjacent said kiln, meanstosupply air to said clinker-cooler, an inclosed conveyer to conveyclinker from said chute'to said coolerto heat the air for combustion insaid kiln, a' vertical water tube boiler and anfeconomizer mounted ad--jacent said kiln, said boiler being provided with an auxiliary furnaceand connections 1 between said kiln and'said boiler and economizer tooperate said boiler'and economizer by the kiln-gases.

3. In cement apparatus, a rotary kiln, means to heat said kiln,inclosed.means to convey clinker from said kiln and to cool the same, an air-pipeto supply the air for combustion in said kiln to said. means to heatsaid air by said clinker as it passes to sa d kiln, a hood at the upperend of said kiln, a'

,, vertical water-tube boiler and an economizer mot nted adjacent saidhood and connections said boiler and'economizer.

4. In cement apparatus, a rotar kiln, means to heat said kiln, a hoodconnected w th the upper end of said kiln to receive the to pass thekiln-gases from said hood tliroi gh -gases a vertical water-tube boilerhaving widely-spaced tubes and provided with an auxiliary hood, said'urnace being adapted to be operated by forced draft, an economize]:provided with a valved by-pass mounted adjacent said boiler. anexhaust-fan connected with said economizer and avalved boiler-flue andecon? omizer-flue connecting said hood with said boiler and economizer.

-5. In cement apparatus, a rota kiln, means to heat said kiln, a hooconnected with the up er end of said kiln, a vertical water-tube boi erhavin widely-s aced vertic'al tubes mounted ad acent sai hood, anauxiliary furnace for said boiler comprising a grate, an inclosedfire-box, an a'sh-plt and means for sup lying forced draft to saldashpit and valve fines connected with said hood to supply kiln-gases tosaid boiler and to con duct said kiln-gases past said boiler without voperating the same.

6. In cement apparatus, a rotary kiln,

furnace mounted adjacent saidcementmeans to feed material into saidkiln, means to'heat said kiln, a boiler mounted adjacent said kiln, anauxiliary furnacefor said boiler provided with an inclosed combustion-chamer and passages-to feed the spent gases from said kiln tosaid boiler beyond the combustion-chamber of the same. I

7. In cementa paratus, a rotary means to heat said in, a hood connectedto theupper end of said kiln, a vertical watertubes mounted adjacentsaid 'In and means ICO kiln,

. 5 tube boiler having widel '-s aced vertical to conduct the ases fromsaid kiln through said hood to sai boiler.

8. In cement a paratus, a rotary kiln,

IIO

means 'to heat said -'ln, a hood connected to theupper end of said kiln,a water-tube boiler mounted adjacent said hood, and means to convey thekiln-gases from said hood through said boiler.

9. In cement apparatus, a rotary kiln,

means to heat said 1ln, a hood connected to the upper end of said kiln,a boiler and 'an economizer-mount-ed adigcent said hood and means toconduct the 'ln-gases from said hood through said boiler and saidecono-- mizer.

10, In cement apparatus, akiln, means to end of said kiln, a boiler andeconomize'r mounted adjacent said'hood, by-passes for the same and meanstoconduct the kiln'-' through said boiler and heat said kiln, a hoodconnected to the upper conduct the kiln-gases from said & e seams saidhood, means to conduct the kiln-gases from said hood through'said boilerand economizerand a fan to regulate the movement of 9 said gases.

13. In cement apparatus, a kiln. means to heat said kiln, a hoodconnected with the upperend of said kiln, a boiler and economizermounted adjacentsaid hood, means to con- .duct the kiln-gases from saidhood through said boiler and economizer and a fan to regu late themovement of said kilnases.

14. In cement apparatus, aki means to heat said kiln,'a hood connectedto the upper end of said kiln, an economizer provided wlth a by-passmounted adjacent said hood and means to conduct the kiln-gases from saidhood through saideco'nomizer.

15. In cement a paratus, a rotary kiln, means to heat said kiln, awater-tube boiler provided with a by-pass mounted adjacent said kiln andmeans to conduct the kiln-gases through said boiler.

16. In cement a paratus, a rotary ln'ln, means to heat said kiln, aneconomizer provided with a by-pass mounted adjacent said kiln and meansto conduct the kiln-gases through said economizer.

17. In cement apparatus, a kiln, means to heat said kiln, an economizermounted adjacent said kiln, means to conduct the kilngases through saideconomizer and a fan to regulate the movement of said gases.

18. In cement a Earatus, a rotary kiln, means to heat sai 'ln, a hoodconnected with the end 'of said kiln, a boiler and means to conduct thekiln-gases from said hood through said boiler.

19. In cement a aratus, a' rotary kiln, means to heat said 1 21 11, ahood connected to the end of said kiln, a boiler provided with a by-passmounted adjacent said hood and means to conduct the kiln-gases from saidhood through said boiler.

20. In cement a aratus, a rotary kiln, means to heat sa1d In, aWater-tube boiler and an economizer mounted'adjacent said kiln and meansto conduct the kiln-gases through said boiler and economizer. J

21. In cement apparatus, akiln,-means to 4 heat said kiln, a boiler andeconomizer mounted adjacent said kiln and means to conduct thekiln-gases through said boiler and economizer. a

22. In .cement apparatus, a kiln, means to heat said kiln, an economizermounted adjacent said kiln, means to conduct the kilngases --tliroughsaid economizer and means to regulate the movement of said kiln-gases.

23. In cement zap aratus, a' rotary kiln means to heat sai andmeans toconduct kiln-gases throijgh said boiler.

24. In apparatus for burni cement, a rotary means to heat said k1 aboiler ad- Jacent sa1d kiln and means to conduct gases through saidboiler.

25. In cement apparatus, a rotary means to heat said ln, a Water-tubeboiler mounted adjacent said kiln conduct kiln-gases through saidboiler.

26. In cement a varatus, a rotary kiln, means to heat said a hoodconnected to the end of said kiln, a boiler. provided with a by-passmounted adjacent said hood and connected thereto, and a fan to re latethe movement of gases through said and said boiler. .27. In cement aparatus, a rotary kiln means to heat said kiln, a boiler provided with abl ass adjacent said kiln, means to conduct lg-gases to said boiler, anda fan to figulate the movement of gases through said 11 and said boiler.

28. In cement a aratus, a rot kiln, means to heat said 11, a water-tubeboiler provided with a byass adjacent said kiln, means to conductkiln-gases through said boiler and a fan to regulate the movement ofsaid gases.

29. In cement ap aratus, a rotary kiln, means to heat said kill), aboiler connected to said kiln to receive the kiln-gases, an economizerto receive the kiln-gases from said boiler, and a fan to regulate themovement of the kiln-gases.

30. In cement ap aratus, a rotary kiln, means to heat said kiln, aboiler provided with a by-pass adjacent said kiln to receive thekilnases, an economizer mounted adjacent said boiler to receive thekiln-gases therefrom, and a fan to regulate the movement of thekiln-gases.

31. In cement apparatus, a rotary kiln, means to heat said kiln, avertical water-tube boiler adjacent said kiln to receive the kilngases,an economizer adjacent said boiler to receive the kiln-gases therefrom,and a fan to regulate the movement of the kiln-gases.

32. In cement a paratus, arotary kiln, means to heat said kiln, aWater-tube boiler mounted adjacent said kiln to receive the kiln-gases,an economizer adjacent said boiler to receive the kiln-gases therefromand a fan beyond sa1d economizer to regulate the movement of thekiln-gases:

.ROLLA C. CARPENTER.

Witnesses:

MARGARET I. CoL UHoUN, RICHARD G. DUKEs.

ln, a boiler provided with a by-pass mounted adjacent said kiln andmeans to

